Stan
47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
/*
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* API communication module. Centralizes fetch calls so network details stay
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* out of rendering and state logic. All JSON traffic from the frontend goes
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* through `fetchJson()`, which prepends the versioned base path and unwraps
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* structured error responses into regular thrown errors.
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*/
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import { API_BASE } from './constants.js';
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/*
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* Generic JSON fetcher. Prepends the API base path when the caller passes a
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* relative path, forwards headers, and parses the response body on success.
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* Non-2xx responses raise an `Error` whose message is the server's `message`
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* field when present, otherwise a generic status-code fallback.
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*/
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export async function fetchJson(path, options = {}) {
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const url = path.startsWith('http') ? path : `${API_BASE}${path}`;
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const requestOptions = {
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...options,
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headers: {
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Accept: 'application/json',
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...(options.headers || {})
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}
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};
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const response = await fetch(url, requestOptions);
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if (!response.ok) {
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let message = `Request failed for ${url}: ${response.status}`;
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try {
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const errorPayload = await response.json();
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if (errorPayload?.message) {
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message = errorPayload.message;
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}
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} catch {
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/* Ignore JSON parse errors for non-JSON responses. */
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}
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throw new Error(message);
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}
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return response.json();
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}
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